Customer Engineer

10+ Customer Engineer Interview Questions and Answers

Updated 8 Jan 2025
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Q1. What will happen if you have to handle a dead machine?

Ans.

I would follow the standard protocol for handling a dead machine.

  • I would first confirm that the machine is indeed dead and not just malfunctioning.

  • I would then follow the standard protocol for handling dead machines, which may include checking for any visible damage or signs of wear and tear.

  • If necessary, I would consult with other engineers or technical experts to determine the best course of action for repairing or replacing the machine.

  • Throughout the process, I would docum...read more

Q2. Tell me about types of motor yo had worked

Ans.

I have worked with various types of motors including AC motors, DC motors, stepper motors, and servo motors.

  • AC motors: Used in household appliances and industrial applications.

  • DC motors: Commonly found in electric vehicles and robotics.

  • Stepper motors: Used in precision positioning systems and 3D printers.

  • Servo motors: Found in robotics and automation for precise control.

Q3. how many elevator portfolio you are handling right now?

Ans.

I am currently handling a portfolio of 15 elevators.

  • Currently managing 15 elevators in various buildings

  • Responsible for maintenance, repairs, and upgrades

  • Regularly communicate with building owners and tenants

  • Provide technical support and troubleshooting services

  • Track performance metrics and ensure compliance with safety regulations

Q4. Working principle of transformer

Ans.

A transformer is a device that transfers electrical energy between two or more circuits through electromagnetic induction.

  • Transformers work on the principle of electromagnetic induction.

  • They consist of two or more coils of wire, known as windings, which are wound around a common magnetic core.

  • The primary winding is connected to the input voltage source, while the secondary winding is connected to the load.

  • When an alternating current flows through the primary winding, it creat...read more

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Q5. Do you know about safety policy

Ans.

Yes, I am familiar with safety policies.

  • I have a strong understanding of safety policies and procedures.

  • I am knowledgeable about industry-specific safety regulations.

  • I have experience implementing safety measures in previous roles.

  • I prioritize the safety of customers and colleagues in my work.

  • I am familiar with conducting safety audits and inspections.

Q6. Draw down the symbol of pnp,npn transistor

Ans.

A PNP transistor symbol consists of an arrow pointing inward, while an NPN transistor symbol consists of an arrow pointing outward.

  • PNP transistor symbol has an arrow pointing inward

  • NPN transistor symbol has an arrow pointing outward

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Q7. Function and working of bride rectifire

Ans.

A bridge rectifier is an electronic circuit that converts alternating current (AC) to direct current (DC).

  • A bridge rectifier consists of four diodes arranged in a bridge configuration.

  • It rectifies the AC input voltage by allowing current to flow in only one direction.

  • During the positive half-cycle of the AC input, two diodes conduct and during the negative half-cycle, the other two diodes conduct.

  • This results in a pulsating DC output that is then filtered to obtain a smoother...read more

Q8. Rectifier working in detail

Ans.

A rectifier is an electrical device that converts alternating current (AC) to direct current (DC).

  • Rectifiers are commonly used in power supplies and electronic devices.

  • They consist of diodes that allow current to flow in only one direction.

  • Half-wave and full-wave rectifiers are two common types of rectifiers.

  • Rectifiers can be used to convert AC power from the mains to DC power for electronic devices.

  • They are also used in battery charging circuits and in converting AC power to...read more

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Q9. How working elevator?

Ans.

An elevator works by using a system of pulleys, counterweights, and a motor to move the elevator car up and down within a shaft.

  • Elevators have a motor that drives a pulley system to move the elevator car.

  • Counterweights are used to balance the weight of the elevator car and reduce the load on the motor.

  • Safety mechanisms such as brakes and sensors are in place to ensure safe operation.

  • Elevators are controlled by buttons inside the car and on each floor to select the desired des...read more

Q10. Find the count of request in log file

Ans.

Use a script to count the number of requests in a log file.

  • Read the log file line by line

  • Identify the lines that represent requests

  • Increment a counter for each request line

  • Display the total count of requests

Q11. Find type of requests in log file

Ans.

Identify types of requests in a log file

  • Look for keywords like GET, POST, PUT, DELETE

  • Check for status codes like 200, 404, 500

  • Identify specific endpoints or URLs

Q12. What is ac and dc

Ans.

AC and DC are types of electrical current.

  • AC stands for alternating current and changes direction periodically.

  • DC stands for direct current and flows in one direction only.

  • AC is used in household appliances and power grids while DC is used in batteries and electronic devices.

  • AC voltage can be easily transformed using a transformer while DC voltage cannot be transformed without a converter.

Q13. Operation of solenoid coil

Ans.

The operation of a solenoid coil involves the conversion of electrical energy into mechanical motion.

  • A solenoid coil consists of a wire wound into a tightly packed helix.

  • When an electric current passes through the coil, a magnetic field is generated.

  • This magnetic field attracts or repels a movable ferromagnetic core, resulting in mechanical motion.

  • The direction of the motion depends on the polarity of the current and the design of the solenoid.

  • Solenoid coils are commonly used...read more

Q14. Describe type of electrical motor.

Ans.

An electrical motor is a device that converts electrical energy into mechanical energy.

  • Uses electromagnetic fields to generate motion

  • Common types include DC motors and AC motors

  • Can be classified based on construction (e.g. brushed, brushless) or application (e.g. servo, stepper)

  • Examples: induction motor, synchronous motor, brushed DC motor, brushless DC motor

Q15. Troubleshooting shooting method

Ans.

Troubleshooting shooting method involves identifying and resolving issues in a systematic manner.

  • Start by gathering information about the issue and its symptoms

  • Identify possible causes and narrow down the root cause

  • Develop a plan to address the issue step by step

  • Test solutions and verify if the issue is resolved

  • Document the troubleshooting process for future reference

Q16. Hardware & Network problem

Ans.

Hardware and network problems can be caused by various factors.

  • Identify the specific hardware or network component causing the issue

  • Check for loose connections or damaged hardware

  • Run diagnostic tests to pinpoint the problem

  • Update drivers and firmware

  • Check network settings and configurations

  • Restart or reset the hardware or network device

  • Consult technical documentation or seek expert help if necessary

Q17. Full form of MCB

Ans.

MCB stands for Miniature Circuit Breaker.

  • MCB is an electrical switch that automatically interrupts the flow of current in an electrical circuit during an overload or short circuit.

  • It is a type of circuit breaker that is commonly used in residential and commercial buildings to protect electrical circuits from damage.

  • MCBs are designed to trip and disconnect the circuit when excessive current flows through it, preventing overheating and potential fire hazards.

  • They are compact in...read more

Q18. Operation of VFD's

Ans.

VFD's (Variable Frequency Drives) are electronic devices used to control the speed and torque of electric motors.

  • VFD's convert fixed frequency AC power to variable frequency power, allowing precise control of motor speed.

  • They are commonly used in industrial applications to save energy, improve motor performance, and reduce wear and tear.

  • VFD's consist of three main components: rectifier, DC bus, and inverter.

  • The rectifier converts AC power to DC power, the DC bus stores the co...read more

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